1 6 Jones, Action of Alkalies on Glass and on Paraffin. 



Tai'.le E. 

 Action of Baryta Solution on Paraffin Wax. 



It i.s evident from these experiments that the action 

 of baryta water on paraffin does not begin for some time, 

 but ultimately the action is considerable, so that while a 

 paraffined bottle may be safely used for the Pettenkofer 

 test, the storage of standard baryta solution in paraffined 

 bottles is quite inadmissible. 



The next set of experiments shows the action of lime, 

 strontia, and baryta water in similar circumstances on 

 paraffin shavings, which were used to increase the surface 

 of paraffin exposed to the alkaline solutions. Two 

 grammes were added to each bottle. The results given 

 in Table F show that, while all three solutions act on 

 paraffin, the baryta acts far more energetically than either 

 of the others, and indeed its alkalinity had all but dis- 

 appeared after five months' contact. 



* Strength at starting. / 



